Hitachi HARC-MODBUS - CHILLER: Data Available

PMML0175A-rev.1 - 6/2008
HARC-MODBUS - xxxxxxxxxxxxxxxx
15
English
HARC-MODBUS - Installation Manual
6.2 CHILLER: Data available
Address Name Description Values Read/Write
0 EXIST Exist 0: Not exist
1: Exist
Read
1 SYSTEM_ADDRESS Chiller Address 0~ 15 in H-LINK 1 Read
2 (Not used) (Not used) (Not used) (Not used)
3 ONOFF_SET On/Off setting order: 0: Stop
1: Run
Read/Write
4 MODE_SET Mode Setting order 0: Cool
1: Heat
Read/Write
5 TEMP_SET_C COOL setting temperature (see note *) Read/Write
6 TEMP_SET_H HEAT setting temperature
7 CENTRAL_SET Central Setting 0: Local
1: Remote
Read/Write
8 ONOFF_STATUS On/Off Status 0: Off
1: On
Read
9 MODE_STATUS Mode Status 0: Cool
1: Heat
Read
10 TEMP_C_STATUS COOL Setting Temperature
Status
Read
11 TEMP_H_STATUS HEAT Setting Temperature
Status
Read
12 WATER_INLET Inlet temperature Read
13
WATER_OUTLET Outlet temperature Read
14 AMBIENT_TEMPERATURE Ambient temperature Read
15 OPER_CONDITION Unit operation condition 0: OFF
1: Thermo OFF
2: Thermo ON
3: Alarm
Read
16 ERROR_CODE_CH Alarm code for general
CHILLER alarm
Read
17~22 ERROR_CODE_CYC Alarm code for cycle alarm
(1~6)
Read
23~31
(Not used) (Not used) (Not used) (Not used)
 Notes:
– Offset Position is: 40000 + N*32 + Address as shown in table, where N is Water Chiller Address.
– Status (real value) and Set (value ordered) parameters have usually the same value but, in some cases, some of them can be
different. It is recommended to use Set parameters for normal control.
– *) When Temperature Setting and Operation Mode are changed at the same time, order first the operation mode change and
later set the desired temperature.